Hi. The process of adding TOC is somehow manual:
https://musicbrainz.org/cdtoc/attach?toc=<MBTOC>&filter-release.query=<MBID>
To have added it programmatically, I need also media IDs for all volumes:
https://musicbrainz.org/cdtoc/attach?toc=<MBTOC>&filter-release.query=<MBID>&medium=<MEDIUMID>
But the MEDIUMID numbers are missing from release record sent by API